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Finding the Fourth Proportional to 442,843.90, 664,363.05 and 218,311.90

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Solution

The fourth proportional to 442,843.90, 664,363.05 and 218,311.90 is: 327,515.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,843.90 : 664,363.05 = 218,311.90 : x
  2. Step 2: Convert to fraction form
    442,843.90/664,363.05 = 218,311.90/x
  3. Step 3: Cross multiply
    442,843.90x = 664,363.05 × 218,311.90
  4. Step 4: Simplify right side
    442,843.90x = 145,038,359,735.30
  5. Step 5: Solve for x
    x = 145,038,359,735.30/442,843.90
  6. Step 6: Final answer
    x = 327,515.77

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